Haskell for Unix

Today a small tutorial for beginner Haskell programmers, wondering what to do with the language. We implement a range of common unix tools as Haskell one liners, using a "just show me the code" philosophy. The examples should help give a flavour of the beauty and expressiveness of Haskell programming. Here's a preview of complete programs:

-- The 'cat' program
cat     = input id

-- Sort a file
srt     = input sort

-- Reverse a file (tac)
tac     = input reverse

-- remove duplicate lines from a file (like uniq)
uniq    = input nub

Read the tutorial.

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• Working at a high altitude for low level performance
• Write Haskell as fast as C: exploiting strictness, laziness and recursion
• Haskell is a strict language
• Use those extra cores and beat C today!
• No monadic headaches: multi-core concurrency is easy in Haskell
• No more exceptions: debugging Haskell code with GHCi
• Run length encoding in Haskell
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• Tracking focus with a Zipper
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• The programmable semicolon: shell scripting and privilege separation
• Programming Haskell: argument handling
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• Programming Haskell: introduction
• Roll your own IRC bot
• Simple unix tools

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